Question 121
Which property increases down a group in the periodic table?PeriodicityPeriodicitymedium
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Question 122
In a chemical reaction, increasing the temperature generally has what effect on the rate of reaction?Rates of reactions (kinetics)Rates of reactionseasy
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Question 123
For the equilibrium reaction: N₂(g) + 3H₂(g) ⇌ 2NH₃(g), what happens to the position of equilibrium when pressure is increased?EquilibriumEquilibriummedium
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Question 124
Which of the following is a Brønsted-Lowry acid?Acids, bases, saltsAcids, bases, saltseasy
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Question 125
Which type of polymerization involves the repeated opening of double bonds to form a polymer?Polymer chemistryPolymer chemistryhard
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Question 126
Calculate the mass of CO₂ produced when 44 g of methane (CH₄) is completely burned in oxygen.Calculation chemistry (stoichiometry)Calculation chemistryhard
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Question 127
Which environmental pollutant is primarily responsible for the depletion of the ozone layer?Environmental chemistryEnvironmental chemistrymedium
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Question 128
Which state of matter has a fixed volume but no fixed shape?Structure and properties of matterStructure and properties of mattereasy
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Question 129
In a redox reaction, what happens to the species that is reduced?Redox reactionsRedox reactionsmedium
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Question 130
What is the function of a salt bridge in an electrochemical cell?ElectrochemistryElectrochemistryhard
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